Street sweeping machine



'7 Sheets-Shee't l F. D. WILSON ETAL STREET SWEEPING MACHINE Filed May10, 1939 June 16,v 1.942.

June 16, 1942. F. D. wlLsoN E-rAL STREET SWEEPING MACHINE 7 Sheets-Sheet2 Filed May 1o. 1959 lfvenor-s -sn .'D, MASON zfoSEPH Euros BY. 7 jFittornex `lume 16, 1942.

F. D. WILSON El"l\|` STREET SWEEPING MACHINE Filed May 10, 1939 '7Sheets-Sheet 5 ai'/ Ens/SPH -H/yms F H: orney June1e,1942. e. D. WILSONmL 2,286,245

STREET SWEEPING MACHINE Filed May 10, 1959 7 Sheets-Sheet 4 l Ill l IlIIIIII IIII By, Mft/LP nlztorney June 16,'1942. F. 1;). wlLsoN ETALSTREET SWEEPING MACHINE Filed May 10, 1939 7 Sheets-Sheet 5 June 16,1942- `F. D. wlLsoN E1'- AL *27,286,245

STREET SWEEPING MACHINE '7 Sheets-Sheet 6 Filed May l0, 1959 QttorneY (lF. D. WILSON E'I'AL Ju'ne 16, 1942.

STREET SWEEPING MACHINE Filed May l0, 1959 '7 Sheets-Sheet '7 www@mVen'Qr-S Faso D. MLso/v JOSEPH ZN-ms HttorneY Patented June 16, 1912UETE TS TE STREET SWEEPING RMCHINE Application May 10, 1939, Serial No.272,858

4- Claims. (Cl. 15S- 83) Heretofore most of the self-propelled streetripheral speed to give the dirt `or trash the resweeping machines weredesigned to deposit maquired momentum.

terial at the foot of an elevator and elevate the Another object of thisinvention is to provide material into a carrying receptacle, whichremeans which willautomatieally notify the 010er aquires a multiplicityof complicated parts to re- 5 tor when the material carrying receptacleiS full, pair and keep in working condition. Furtherand also manuallyoperated means to move into more, separate frames were used upon whichand Vout of contact with the material in the ma- -were mount-ed thebroom, the dirt reeeptade, the torial carrying' receptacle and thusdetermine elevators and power plants supported by steering When thematerial Carrying reCeltaCle S ready and propelling wheels and this ofnecessity made 10 Vt0 be dumped `a long street sweeper which wasdinicult to ma- Another object of 'this invention is to provide neuverin restricted areas. means whereby the operator can adjust the gut- Oneof the objects of this invention is 'to vprotet' bOOIl t0 the angle Ofthe gutter Without vide deneoting means which vcontacts the sweep-Stopping the sweeper, thus eliminating the necesmg broom and isadjustable es to the deoeoting l5 sity of Cleaning the gutter by hondlabor. angle, or its normar relation to the vbrown, also Another objectof this invention is to vso mount adjustable means to maintain constantrelation the groom that independent VeltCal movement between the-defieeting means and the Ysweeping of the broom when in operatingposition can be broom as the broom Wea-rsaffected without disturbinglthe relation of any Ano-ther object of this invention is to provide 20other'partathus allowingthe broom to drop into a self-propelling streetsweeper which can be built depressions or move over humps during the insmall sizes as well as large sizes andeliminates Sweeping Operation.

the use of elevators and conveyors to deposit the Another Object 0f thism'etttsn is t0 mount a material ingo the material Carrying receptacle,deflector on the front steering wheel which -will thus permitting theSweeper to be made much 25 move the turning of the steering -wheel andthus shorter and increases its maneuverability in :re-` prevent: at alltimes the material being swept by strict-,ed regg the gutter broom frombeing thrown ahead of Another object of this invention is to provide aand in the path 0f the steering Wheelseli-propelled sweeper in whichtheengineframe Further Objects 0f this nventsn at@ t0 PTO' and thematerial carrying receptacle form the H, vide a construction of maximumsimplicity, effimain frame of the machine, to which are mount- CistsesGnOmY and ease 0f assembly andopst'a ed the Supporting, driving andSteering Wheels tion, and such further objects, advantages and and therotary brooms, thus eliminating the use Capabilities as Wm later'morsfully appeal' sind of a Special franm are inherently possessed thereby.

Another object of this invention is to provide .zo The invention furtherresides in the Combina" a self-propelled sweeper having a front steeringtien constmctn and arrangement 0f parts wheel, one rear driving wheeland one rear sun- 'illustrated in the accompanying drawings and portingwheel, thus eliminating tueuse ,of a, df while we have shown therein apreferred embodiferentiaL ment, it is to be understood that the same issus- Another object of this invention is to provide ill Cepttble ofmodcaton and Change Without de power means for raising and lowering thesweeppartmg from the stamt of the nvento ing broom, the defleetor andthedraw wings and It? the dmv/mss: also automatically move the movablebottom and Figure l isa Side elevation ofthe sweeper ShGW' curved plateof the material carryingre'ceptacle mg the brom m the normal Workingposition upward and forward and downward and backif and .a Sectwnal Viewof. the Cover adjustments Ward, 'thus permitting the dirt or trash to beandthe gutter broom dmve' dumped at stated intervals and the broom toFigure 2 1s a plan View of the`-entre Sweeper' Clear the dumped pue ofdirt 01. trash Figure 3 is a side elevation and a partial cross AnotherObject Of this invention is to provide section showing the sectionalviews of the gas means .for driving the broom at a Constant rate i9tank, water tank or reservoir and the material of speed, irrespective ofthe speed of the sweeper, Carrying tessptttslsf broom and otherCoordiand thus vassure the operator that the dirt or matins parts in thenormal working position. trash is being picked up and deposited in frontof Figure Il is a side Cross sectional View of the the material carryingreceptacle, as it is known rear portion of the sweeper including theentire that the broom must be driven at a certain pe- .35 materialcarrying reeeptacle and the water tank or reservoir, showing the broom,drag wings and dirt deflector in an elevated position for transportion.

Figure 5 is a cross sectional view of the sweeper at 5-5 in Figure 1.

Figure 6 is a side elevation with the rear portion cross sectioned toshow the broom in the elevated position and the bottom of the materialcarrying receptacle elevated for dumping the material collected.

Figures 7 and 8 are side and cross sectional views of another form ofmeans to adjust the deector to the groom.

Figure 9 is a plan and sectional view showing the frame of the sweeperand also the manually operated means to determine when the materialcarrying receptacle is full.

Figure 10 is a rear view of Figure 9 with the broom and other partsremoved to show the frame construction and also the manually operatedmeans to determine when the material carrying receptacle is full.

Figure 11 is a cross section of the side elevation shown in Figure 9 atII-II showing a portion of the frame and the steering axle in section,with the broom and the manually operated means to determine when thematerial carrying receptacle is full shown in dotted lines.

Figure 12 is a diagrammatic plan view of the sweeper showing thepropelling and control mechanism and the sprinkling system.

Figure 13 is a cross section of the hydraulic cylinder shown in Figure12 at I3-I3.

Figure 14 is a side elevation of the transmission gears for speed anddirectional control shown in Figure 12 at I4-I4.

Figure 15 is a view showing the method of adjusting the gutter broomfrom the operators seat or station while the sweeper is in motion.

Figure 16 is a partial cross section taken at I6-I6 in Figure l.

Figure 1'1 is a portion of the side elevation shown in Figure 6 to moreclearly show some of the details.

Figure 18 is a cross section of Figure 17 at I8-I8.

Figure 19 is a cross section of Figure l2 at IS-IQ to show the relationof the transmission shaft and the gutter broom drive shaft to the meansfor keeping the drive chain in contact with the sprocket.

Figure 20 is an enlarged View and cross section-of the lower portion ofthe deilector showing means for adjusting the angular relation of thedeflector to the broom.

Referring to the drawings:

The frame of the sweeper (see Figures 3, 4, 5, 6, 9, 10 and 11) iscomposed of two main parts, the engine main frame I and the materialcarrying receptacle 2, which are fastened together by bolts 3, forming asingle unit upon which the sweeper parts are mounted.

The side plates 6 and 1 and the top plate II of the material carryingreceptacle 2 are braced and stiffened on the inside by two diagonalbraces I2 and I3, which are welded or otherwise secured to a reinforcingtop member I4. To the lower end of the diagonal braces I2 and I3 arewelded, or otherwise secured, reinforcing plates I5 and I5. Thus it isseen that the top reinfo-rcing member I4 and the diagonal braces I2 andI3, with the reinforcing plates I5 and I6, form one unit and prevent anyside racking or twisting of the material carrying receptacle 2.

Wheel axle brackets 8 and 9, with wheel axles 8a and 9a mounted therein,are attached to the side plates 6 and 1 of the material carryingreceptacle 2 and to reinforcing plates I5 and I 6 by bolts or rivets IG,thus making a rigid axle support and also stiifening the side plates 6and 1.

The rear propelling wheel 4 and supporting Wheel 5 are mounted forrotation on the wheel axles 8a and 9a by ball or roller bearings I1 ofthe conventional type. The rear propelling Wheel 4 and supporting wheel5 have the conventional type of hydraulic brake equipment I8. On therear propelling wheel 4 is also mounted drive sprocket I9.

The front steering wheel 26 is mounted in a steering fork 2l on axle 22by the conventional type of ball or roller bearings 23. The steeringfork 2| is attached to the front end of engine main frame I by shaft 24,which revolves on the ball or roller bearings 25 mounted in the enginemain frame I. On the shaft 24 is keyed or otherwise fastened a worm gear26. The steering of the front steering wheel 20 is accomplished by theusual form of worm 21 attached to the steering shaft 28, which engagesthe worm gear 26 and is controlled by the operator by the use of handwheel 29. The propelling power or engine 30 is mounted on the enginemain frame I, which frame forms a housing for the usual type oftransmission 3|, clutch 32 and gear shift lever 33, as shown in Figures1, 12 and 14.

At the rear (see Figures 3, 4, 5, 6, '1 and 1l) and near the top of thematerial carrying receptacle 2 is shaft 34, mounted in bearings 35 whichare bolted or otherwise secured to the side plates 6 and 1. Keyed orotherwise fastened to the shaft 34 on the outside of side plates 6 and 1are levers 36 anad 31, and keyed or otherwise fastened to the shaft 34on the inside of the side plates 6 and 1 are levers 3S. Rotatablymounted on shaft 34 are links 4i), to which are bolted arms 4I.Rotatably mounted on shaft 34 outside of levers 36 and 31 are links 45and bolted or otherwise fastened thereto are bars 46, having adjustablescrews 48 in the projection 49 to adjust the broom axle bearing brackets5l), which have slotted holes 5I and are bolted to bars 46 by bolts 52.

The .'broom axle bearing brackets 50 have mounted therein roller or ballbearings 53 in which broom axle 54 rotates. On broom axle 54 is mountedand keyed the broom 55, and one end of the broom axle 54 sprocket 56 iskeyed or otherwise fastened. Rotatably mounted on shaft 34 outside oflink 46 is a double sprocket 51. Sprocket 56 is driven from doublesprocket 51 by sprocket chain 58. The broom axle 54 and broom 55 arereversible and spacer 59 is used on one end of broom axle 54 to permit`the reversibility of broom axle 54.

Mounted on bars 46 (see Figures l, 4 and 6) and rigidly attached theretois the broom cover 60, so designed that it rotates with the bars 46 andbroom 55 concentric with the center of shaft 34 during the raising andlowering of the broom 55.

To prevent refuse, dirt or other material from being thrown thru thespace above the broom 55 under the broom cover 66 and thence back to theground, we have added a plate I4I which is swivelably connected to thebroom cover 60 at |42. The lower end of plate I4I has adjustable bars|43 attached at |44. These adjustable bars |43 extend thru the broomcover 60 and have several holes |45 punched therein. As the broom 55wears, the adjustable bars I43 can be moved upwardly and thereby theplate lill is kept in` contact with the broom 55. This adjustment ismade by inserting a pin |56 thru bracket ll'l,

mounted on the outside of broom cover 5.6, and

into one of the holes |45.

Another means of adjustingA this plate |51. is shown in Figure 7 andconsists of threaded bars Msc, which are movable up or down bymeans ofthreaded cranks mit, which are rotated in the direction desired in orderto maintain a constant relation between the plate |1| and the broom 55.

Tol throw the material picked up by the broom 55 (see Figure 3) into thematerial carrying receptacle 2, a deector bares of the same width as thebroom 55 is attached by welding or any other means to the lower ends ofarms 4|.

An adjustable deflector bar may be desired, as some materials areheavier than others and consequently the angular relation of deflectorbar 44 to the broom 55 would have to be slightiy modied to suit thematerial to be deposited in the material carrying receptacle 2 by thebroom 55. An adjustable deector bar Ma is shown in Figure 26 and issimilar to the delector bar l5 except that it has levers Mb and round'pins or bolts 55o welded to each end. Round pins or bolts de areinserted into circular holes idd of the arms rlI. To adjust the angularrelation of the adjustable deector bar 44a to the broom 55, there isprovided bolts 4de, which are inserted in the slots 54j of the arms 4|.By moving the levers Mib, the desired angularity can be secured, andtightening the bolts 44e at the desired position will maintain the A,

selected. angular relation of the adjustable deflector bar 44a to thebroom 55.

To maintain a constant relation between the room 55 and the deiiectorbar dll or Ma, we provide adjusting rods |33, the lower ends of whichare swivelably attached to the links Il@ by pins |34. The upper ends ofadjusting rods |33 are threaded to receive the adjusting cranks |55which are also tapped for the threads of adjusting rods |33. Theadjusting cranks |35 are mounted on the broom cover 66 by brackets |35.

Figures 7 and 8 show a single crank |37.l which is attached to shaft|53, and mounted thereon are beveled pinions |55. Instead of usingadjusting cranks |35, we have substituted beveled gears |46 which arethreaded to receive adjusting rods |33. Thus it is readily seen thatboth adjusting rods |53 can be adjusted by the rotation of the singlecrank |31.

To prevent the material from owing around the sides of the broom 55,there are mounted on either side of the broom 55, drag wingsl H8 (seeFigures 1, 3, fl and 6) which are swingably connected to the side platesS and l by four links |21] and |2|. Links |25 are fastened to the lowerpart of drag wings ||S by pins |55 and to the lower part of side plates6 and 'l b-y pins |24. Links |2| are fastened to the upper part of dragwings I8 by pins |3| and to the side plates 6 and by pins |32. On linksll are extensions |25, to the upper ends of which are attached springs|26 and adjustable rods |21 andnuts |28. Adjustable rods |27 areinserted thru holes in brackets |29, which are welded to side plates 6and l.

Links d2 are swingably mounted to each side of the broom cover 66 andsprings Il?,l are attached thereto. The top links of the chains 39 areattached to the hook-shaped ends of springs 43. The opposite ends of thesprings 63 have U-boltsl attached to the drag wings 8 and inserted intothe lower links of chains 3|);` Thus the drag wings H8' are lifted fromthe pavementl when the broom 55 is raised. This design permitsadjustment of drag wings H3 as the broom 55 wears.

Swingably mounted on drag wings l 8 by bolts or pins |5| are guards |59which prevent the broom 55 from throwing small stones or other materialahead of the material carrying receptacle 2 and outside of the rearpropelling wheel 4 and supporting wheel 5.

On the outer ends oi levers 36 and 31 and connected thereto by pins 6|are connection yokes 62, which are attached to spring sleeves 64 bybolts 56. The lower ends of spring sleeves 64 have plates 69 weldedkthereto, with holes 61 in the center thereof thru which the spring rods68 pass to make connection with the suspension spring anchors '16. whichare attached to each side of the broom cover 66 by rivets, bolts orwelding, as may be most convenient. The spring rods 68 have check nuts72 and adjusting nut 13, as shown in Figures 1, 2, 4 and 6. Theadjusting nut 13 is used to apply the proper tension on the springs 14by I means of the spring rods 68. The upper ends of spring rods 68 havecircular discs l5 welded thereto which are larger than the outsidediameter of springs '14 and form a spring seat for the upper ends ofsprings 14. The springs 'lll and a portion of the spring rods 68 areenclosed in the spring sleeves 65 and the tension of the springs 'i4 isadjustable.

The above arrangement permits the broom 55 to raise or lower a slightamount without disturbing the levers 36 and 37, when passing over bumpsor depressions during the sweeping operation.

The upper end 'll of lever 31 has two holes and the piston rod 16 of thehydraulic cylinder is connected to the upper hole by means of pin 18.The opposite end of hydraulic cylinder 'Il is attached to side plate bymeans of fulcrum 5B and pin 79, which permits the hydraulic cylinder tooscillate when raising and lowering the broom 55 and broom cover 66. Thepiston rod 'F6 has the usual piston 8|, packing cup 82, follower 33 andnuts St, and is used to apply power in one direction only. A descriptionof its operation will be given later.

In Figures 2, 3, 4, 6 and ll, connected to the lower ends of levers 38by pins B5 are links 86, which are in turn connected by pins 88 tosegments 85. Segments 86 revolve on shaft 92 and are joined together bycurved plate 6|, which also acts as a movable back for the materialcarrying receptacle 2. At the lower edge or segments 55 is shaft 53,about which the movable bottom 55 `of the material carrying receptacle 2revolves during the raising and lowering movement.

The front ends of adjustable angle guides 65 are mounted on the outsideof the side plates 6 and by bolts H5 and the rear ends have slottedholes Sil for vertical adjustment and are supported on pins |23 whichare attached to the side plates 6 and 'l'. The rear ends of adjustableangle guides 96 are adjustable vertically and are provided with setscrews |22 which contact pins |23 to determine the location. verticallyof the adjustable angle guides 99.

The movable bottom 65 is made up of two plates 55 and 56, which arereinforced and held apart by spacers 67 which also stiffen the movablebottom 94. The top plate is bent downward at the rear end and joined tothe bottom plate 96 by Welding to form a beveled edge. The forward endof plates 95 and 96 are formed to make a circular hinge about shaft 93.On each side of the movable bottom 94 are welded side plates 98 whichcontact the side plates 6 and 1 and move with the movable bottom 94during the raising and lowering movement.

On each side of the rear end of movable bottom 94 (see Figures l, 3 and4) are inserted pins |50 on which is mounted movable bottom guide 81,which slides back and forth on the adjustable angle guides 99 with themovable bottom 94.

The adjustment of adjustable angle guides 99 is to permit the raisingand lowering of the rear end of the movable bottom 94, as sometimeslight material will pass under the delector 44 when it is swept up b-ythe broom 55, which would necessitate the lowering of the rear end ofthe movable bottom 94. Most material, however, can be deposited in thematerial carrying receptacle 2 and on the movable bottom 94 withoutmaking this adjustment.

In addition to front plate 2a of the material carrying receptacle 2,there is another front plate |00, which is formed in a semi-circle andwelded to the side plates 6 and 1 and to front plate 2a and top plate I,and is also reinforced by stiffeners and |02.

On the upper edge of curved plate 9| is an adjustable scraper |63connected thereto by bolts |04. In the upward movement of the movablebottom 94 and the curved plate 9|, the adjustable scraper |03 contactsthe semi-circular front plate |09 and thereby removes all trash or dirttending to stick to the semi-circle front plate |00.

From the foregoing description it is readilyT seen that the movements ofthe movable bottom 94 and the curved plate 9| are synchronized with themovements of the broom 55, the deflector 44 and the drag wings I8` Thebroom 55, the deeotor 44 and the drag wings I8 can be raised fortransportation while the movable bottom 94 and the curved plate 9|remain in the carrying position (see Figure 4) and by admitting more oilto the hydraulic cylinder 11, thus continuing the upward movement of thebroom 55, the deector 44 and the drag wings |I8, the movable bottom 94and the curved plate 9| will move forward and upward and dump the refusefrom the material carrying receptacle 2 and permit the broom 55 to passover and clear the pile of refuse (see Figure 6).

To notify the operator when the material carrying receptacle 2 is readyto dump there is mounted above the movable bottom 94 and curved plate 9|shaft 65, which is revolvably mounted in side plate 1 within tube orshaft 65a and extends outside of side plate 6 and rear propelling wheel4. On shaft 65 outside of rear propelling wheel 4 a lever is mounted. Atthe end of lever |05 is swingable block I 01 thru which is inserted arod |08, which is connected to an eccentric |09 mounted on rearpropelling wheel 4. Rigidly mounted on tube or shaft 65a outside of sideplate 6 is a contact finger ||0 which contacts contact point |06 onshaft 65 when the dirt or trash in the material carrying receptacle 2has raised feelers III, which are rigidly mounted on tube or shaft 65a,to the position shown by solid lines in cross section view, Figures 3and 4. Contact linger |I0 has a wire connection H3 to bell ||2 and awire connection` ||5 from bell ||2 to battery |I4, which is grounded tothe frame by wire I|6. Thus, when the feelers are raised by theaccumulation of dirt or trash in the material carrying receptacle 2 tothe position shown by the solid lines (see Figures 3 and 4), contact isintermittently made between contact point |06 and contact finger I I0,which causes the bell I I2 to-ring and notify the operator on theoperators seat or station |I1 that the material carrying receptacle 2 isfull and ready to dump. Bell ||2 can be operated intermittently orcontinuously, depending on the desires of the operator.

We have shown in Figures 9, 10 and 11 a manually operated means fordetermining when the material carrying receptacle 2 is filled and thisis under the control of the operator. On the outside of side plate 1 ofthe material carrying receptacle 2 is mounted Vertical shaft 2 I I ontwo brackets 2 I2. At the lower end and rigidly connected to shaft 2||is lever 2|3. At the upper end of shaft 2I| is mounted the controlhandle 2|4. On the inside of the material carrying receptacle 2 isfeeler 2|5, preferably made as shown in the drawings. One end of feeler2|5 is rotatably mounted on side plate 6 and the opposite end is rigidlyconnected by a pin 2|1, or other means, to crank 2I6, which projectsinwardly thru side plate 1. On the outside of side plate 1 is aconnecting rod 2|8, one end of which is attached to the lever 2|3 andthe other end is attached to crank 2I6. To maintain the feeler 2|5 inthe position shown by the full lines in Figure 11, a spring 2I9 isprovided, one end of which is attached to the side plate 1 and the otherend to lever 2 I 3.

To determine when the material carrying receptacle 2 is lled, theoperator moves control handle 2 I4 clockwise, as indicated by dottedlines in Figure 9, and thereby lowers the feeler 2I5 to the dottedposition shown in Figure 11, or to whatever position the dirt or trashin the material carrying receptacle 2 causes the feeler 2|5 to be in.The operator can determine by the location of the control handle 2|4what amount of dirt or trash is in the material carrying receptacle 2.When the feeler 2|5 is raised to the position shown by solid lines inFigure 11, the operator knows that it is time to dump the materialcarryinig receptacle 2.

Above the material carrying receptacle 2 is mounted the water tank orreservoir |52 which is recessed as shown in Figure 3 for the operatorsseat or station 1. Additional capacity is secured by having a connectionbetween the water tank or reservoir |52 and a space |53 above thesemi-circle front plate |00, front plate 2a and the side plates 6 and 1of the material carrying receptacle 2. An overow |54 i's provided topermit the excess water to flow downward into the material carryingreceptacle 2 and onto the movable bottom 94, which assists in keeping itclean.

Directly above the water tank or reservoir |52 is an additional space|51 in which the fuel tank |55 is mounted. A door |56 which acts as acover is provided to permit the lling of the water tank or reservoir |52and the fuel tank |55. There is also room in the space |51 to keep toolsand hose connections.

On the left hand side of the sweeper a drag or deflector board |58 issuspended from the engine main frame by means of adjustable chains |59and |60.

Attached by a U-bolt |6| to the front steering fork 2| is a plate |62which forms a support for the front wheel deector |63. Said front wheeldeflector |63 is to reduce the amount of material thrown by the gutterbroom |64 and is made of iexible material such as leather or rubber, andturns With the steeringwheel 20.

Referring to Figure 12, diagonally across underlneath the engine mainframe I and in front of the gutter broom |64 are suspended two sprinklerpipes |65 which are connected to the water 'pump |61. This water pump|61 is of the usual type, having relief valve |68 and connections to thewater tank or reservoir |52. The amount of water desired in thesprinkler pipes |65 is controlled by the valves |66. If necessary, thevalves |66 can be closed when transporting the sweeper from place toplace.

The propelling power or engine 36 is mounted `on the engine main frameat the front end of the sweeper. The main drive shaft 1| of propellingpower or engine 36 extends rearwardly from the clutch 32 and has bevelpinion |16 keyed or otherwise mounted thereon. The transmission 3| ismounted at right angles to the main drive shaft |1| instead of parallel,as transmissions usuauly are assembled, and has three speeds forward andone reverse. The transmission 3| has three shafts, the main transmissionshaft |69, the auxiliary shaft |19 and the intermediate shaft |16, asindicated in Figure 12, which are mounted for rotation on bearings 232,which may be of any standard design. The intermediate shaft |16 hasmounted thereon gears |15 and |11 and is used for reversing thedirection of travel of -the sweeper.

To -propel the main transmission shaft |69, the

bevel gear |12 is mounted thereon by keys or other means and contactsbevel `pinion |19. On vthe right hand side of the main transmissionshaft |69 are mounted shifting gear |13 and dual shift- -ing gear |14.By the use of gear shift lever 33, the desired speeds and direction oftravelof the sweeper can be obtained.

The relative positions and mountings of the shafts |69, |19 and |16 areshown in Figure 14.

-On the auxiliary shaft |19 intermediate of the bearings 232 is mountedtriple gear |13 and on the right hand end sprocket |89, On sprocket |86is sprocket chain |3|, which contacts and drives the drive sprocket I9mounted on propelling wheel 4. Swingably mounted-on the side plate 6 isadjustable idler 233, which contacts sprocket chain |8| to adjust andtake up the wear of sprocket chain |8|.

Thus it is seen that the desired speeds and direction of travel of thevsweeper are easily-controlled by the operator by the use of gear shiftlever 33.

On the left hand end of the main transmission shaft |69 is rotatablymounted a combined gear |82 and sprocket |8217, having projectionsy onthe right side thereof forming a jaw clutch |82a to Vengage gear |83which is slidably mounted on the water pump shaft |39. Gear `|68 can bethrown out of engagement by shifting the gear |83 towards the water pump|61, by means of shifting lever 229. Jaw clutch |93 is slidably mountedon the main transmission shaft |69 and has shifting lever |94 attachedthereto.

Under the main transmission shaft |69 (see Fig. 19) on bearings, 232 ismounted the gutter broom drive shaft |65, which has keyed thereto at theleft hand end drive sprocket |36. On the opposite, or right hand end ofgutter broom drive shaft |85 (see Figure 12) is keyed bevel gear |81,which contacts and drives bevel gear |88 mounted on the auxiliary gutterbroom drive shaft |89, which is mounted at right angles to gutter broomdrive shaft |85, At the forward end of the auxiliary gutter broom driveshaft |89 is keyed bevel gear |69, which contacts bevel gear |9| mounted.sprocket and keyed to the upper end of gutter broom vertical shaft |92.Gutter broom |64 is mounted and keyed on .the lower end of gutter broomvertical shaft |92.

To rotate the gutter broom |64 and broom 55, the shifting lever |94 isshifted toward the center of the sweeper. |The clutch |93 will thenengage the jaw clutch |8201 of the combinedgear |82 and |826, rotatingsprocket |8219 and sprocket chain |95, which engages and contacts rivesprocket |86 and double sprocket 51. Thus it is seen that the speed ofthegutter broom |64 and the broom 55 is independent of the speed of thesweeper or propelling wheel 4. This is desirable and important, as it isnecessary to maintain a certain constant peripheral speed of the broom55to deposit the dirt or refuse in lthe forward portion of the dirtreceptacle.

To the right'of the jaw clutch |93 is rotatably mounted on maintransmission shaft |69, sprocket |96 which drives sprocket v|98 of thelhydraulic pump `|99 by 'means of sprocket chain |91. The hydraulicpump'|99 is only required to supply power to the cylinder 11 to raise andlower the broom 55 and at such times it is not necessary to rotate thebroom 55 or the gutter broom |64. Therefore, jaw clutch l|93 engageseither the jaw clutch |82a or the sprocket |96, as desired.

In Figures l and 15, .to control the raising and lowering of the gutterbroom |64, the lower end of hand lever 228 is mounted kon the outside`of the forward extended side'plate 6a at 22| and is within easy reachof the operator. The shaft housing 296 has guides 222 which determinethe vertical position of the auxiliary gutter broom drive shaft |69 andshaft housing 266, as it is guided in its up and down movement by plate56a and guide bar-223. Bell crank 224 is mounted for rotation on theupper end of guide Vbar 223 at 1225. Adjustable connecting rod 226 isattached to the hand lever 229 and bell crank 224, and shaft housing 206is attached to the lower end of bell crank 224 by link 221 and pin 228.

Pulling the hand lever 229 toward the operator moves the bell crank 224in a counterclockwise direction and thereby raises the gutter 'broom|64. When the gutter broom |64 and the shaft housing 266 are raised, thetension of thespring 236 pulling on the pin 228 and the bell crank 224will hold thergutter broom |64 and the shaft housing 296 ina-raised-position until the hand lever 228 is pushed in the oppositedirection, or away from the operator,

The general construction of the'gutter broom and the shafts and theraising and lowering devices lare similar to that shown anddescribed bythe Wilson Patent No. 1,750,839.

It is sometimes desirable to controlftheangularity of the gutter broom|64 in relation` to the pavement to be swept and, to do so during theforward motion of the machine, we have'shown on Figure 15- a devicewherebythis can bedone without the operator leaving the'operators seator station ||1. Mounted lon lthe forward'ex.- tended side plate-Sa is aplate -266having a hole 26| .on the lower portionthereof forfthe'reception of the pin 262, to which isvmounted-ratchetglever 253 toengage ratchet'teeth 269e. The-,lower portion of ratchet lever 293 has aflat plate 264 which engages a lever 265, which-is attached-to and formsa part of the shaft housing2'96ofthe auxiliary gutter broom drive shaft|89.

4At theupperend ofthelever 295 is connected -an Veye-bolt 2|0, whichprojects inwardly thru ztheforward-extendedplate 6a and has a-spring tothe angle of the gutter and thereby sweep it clean while the sweeper isin motion.

The operator, when seated at the operators seat or station ||1, has fullcontrol of all the movements of the sweeper and also the speed of thesweeper and it will be noted that a constant speed relation between theengine 39 and the broom 55 and gutter broom |94 is maintainedirrespective of the speed of the sweeeper. This is an important factorin sweeping streets or pavements, as it is necessary t maintain adefinite peripheral broom speed to deposit the material into thematerial carrying receptacle 2.

It is also to be noted that after the operator has been notified, by theringing of the bell i2 (see Figures l and 12) or by adjusting themanually operated feeler 2|5 (see Figures 12 and 13), that the materialcarrying receptacle 2 is full, he then disengages clutch 32 and movesgear shift lever 33 to neutral position and thus stops the sweeper. I

Then he moves shifting lever |94 to dsengage jaw clutch |93 from jawclutch |82a and engage sprocket |96, which drives the hydraulic pump |99and closes Valve 235. Releasing clutch 32,

the engine 39 will rotate main transmission shaft |69 and start thehydraulic pump |99 and force oil thru check valve 234 and pipe or tube23| to the front of the piston 8| of the hydraulic cylinder 11 and movesaid piston 8| to its farthest position, thus rotating shaft 34 andlevers 36 and 31 and raising the broom 55, broom cover 69, plate |4I,deflector 44 and drag wings IIS, and at the same time rotating shaft 92and moving the curved plate 9| and movable bottom 94 to the dumpedposition; thus diunping the load of refuse from the material carryingreceptacle 2.

The upper cylinder head 24| has a relief valve 236 which prevents thefluid from flowing back into the oil tank 242, which is set at a desiredpressure, which in most cases is approximately 1' 600 pounds. In thelower cylinder head 240 there is a by-pass 243 from the lower part ofthe hydraulic cylinder 11 to the pipe lines 231 and 238 to permit thefluid which may have been stored in the lower part of the hydrauliccylinder 11 to flow back into the oil tank 242. Any excess pressure,over the pressure at which the relief valve 233 operates, will cause thefluid to flow thru pipe lines 231 and 238 into the oil tank 242. Therelief valve 236 is also for the purpose of permitting the hydraulicpump |99 to continue operating and the excess pressure to flow thrurelief valve 236 as above described.

Check Valve 234 prevents the fluid from owing backward into thehydraulic pump |99 should the hydraulic pump |99 be stopped, and thusthe pressure is maintained in the hydraulic cylinder 11 duringtransportation of the sweeper or until it is desired to lower the broomto contact with the pavement.

After depositing the refuse on the pavement, the operator will thendisengage clutch 32 and move gear shift lever 33 to first speed positionand thus move the sweeper forward over the pile of refuse which has justbeen deposited. He then moves shifting lever |94 to engage jaw clutch|93 with jaw clutch |82a and disengage sprocket |96. When it is desiredto return the broom 55, broom cover 60, plate |4I, deector 44` and dragwings I|8 to the normal operating position, he opens valve 235, whichwill permit the fluid to now thru pipe 23|, thru valve 235, into pipelines 231 and 238 and back to the oil tank 242.

From the forgoing description it can be readily seen that our inventionis intended to include other forms of street sweepers which might beattached to and become a part of or be drawn by tractors or other powerpropelled vehicles where the power from said vehicles can be utilizedfor rotating the brooms, raising and lowering the rear broom, deflector,movable bottom and end and dumping the load.

Having now described and illustrated one form of our invention, it isreadily seen that other combinations may be made without departing fromthe spirit of the invention.

We claim:

1. In a street sweeper, in combination, a frame supported for movement,a material receptacle having a movable bottom and end rotatably mountedon the sides thereof mounted on said frame, a rotatable shaft projectingthru and mounted on the sides of said material receptacle, arms havingtheir forward ends rigidly mounted on said shaft and the rear endsprovided with bearings, a rotatable broom mounted in said bearings, abroom cover attached to said arms, a second pair of arms having one endrotatably mounted on said shaft and a material deflector mounted on theopposite end, means connecting said broom cover and said second pair ofarms to maintain a constant relation between said material deflector andsaid broom, means mounted on said frame and material receptacle to raiseand lower said broom, broom cover and deflector and move said movablebottom and end as one unit, an operators station on said frame, controlmeans at said operators station to control the raising and lowering ofthe said broom, broom cover and deflector and the moving of said movablebottom and end.

2. In a 'street sweeper, in combination, a frame supported for movement,a material receptacle having a movable bottom and end mounted on saidframe, a rotatable broom and a material defiector in constant relationwith and adjustable to said broom swingably mounted on said frame, meansto rotate said broom to deliver material into said material receptacle,power means mounted on said frame and material receptacle, control meanst0 control said power means to synchronize the raising of the said broomand said deflector and the moving of said movable bottom and end topermit the material to be dumped from the said receptacle and the saidbroom to clear the dumped material during the movement of the sweeper.

3. In a street sweeper, in combination, a frame supported for movement,a material receptacle having a movable bottom and end mounted on saidframe, a rotatable broom and a material deflector in constant relationwith and adjustable to said broom swingably mounted on said frame, meansto rotate said broom to deliver material into said material receptacle,hydraulic means mounted on said frame and material receptacle, controlmeans to control said hydraulic means to synchronize the raising of thesaid broom and said deflector and the moving of said movable bottom andend to permit the material to be dumped from the said receptacle andthe' said broom to clear the dumped material during the movement of thesweeperiy 4. In a street sweeper, in combination, a frame supported formovement, a material receptacle having a movable bottom and end mountedon said frame, a rotatable shaft projecting thru and mounted on thesides of the said material receptacle, arms having their forward endsrigidly mounted on said shaft and the rear ends provided with bearings,a rotatable broom mounted in said bearings, a broom cover attached tosaid arms, a second pair of arms having one end rotatably mounted onsaid shaft and a material deector mounted on the opposite end, meansconnecting said second pair of arms to said broom cover to maintainconstant relation between said deector and the said broom, leversrigidly mounted on said shaft having connection to said movable bottomand end, a second set of levers rigidly connected to said shaft havingpower means connected thereto to rotate said shaft and raise said broomand material deflector and move said movable bottom and end to dump thematerial collected in said material receptacle.

FRED D. WILSON.

JOSEPH ANTOS.

